Torch tip



.EFE EE EEES i fw o, THURMAN, JR

TORCH TIP Filed Dec. 1s, 1945 f5 W' P7 "fi ff r1 @et 4, i949..

Patented Oct. 4, 1949 V'rohen 'rIrl Oliver Thurman, Jr., Mountain Lakes,N. J., assignor to Air Reduction Company, Incorpo- V rated, acorporation of New York Application December 13, 1945, Serial No.634,686

8 Claims. 1

This invention relates to torch tips of the block type, i. e. the typethat have a number of jet passages for the gases formed directly in ablock of metal, as distinguished from the nozzle type of torch tip.

The jet passages of block-type tips are usually formed by drilling intothe block from that face of the block which is to constitute thedischarge face. The jet passages arevusually in one or more rowsextending longitudinally of the block and the jet passages of each rowall communicate with a longitudinal -bore within the block whichconstitutes a distributing chamber for delivering gas simultaneously toall of the jet passages of a row. Sometimes each jet passage has ametering port through which the gas ows in passing from the distributingchamber into the jet passage. The drilling must ybe done very carefully,especially that which is required to form the jet passages .andmeteringports, and is therefore time consuming and increases the cost of'makingthe tips. A

Among the objects ofthe invention are to provide an .improved block-typetorch tip that is relatively inexpensive `to manufacture and whose partsare so constructed and assembled that no drilling is required Ato formthejet passagesv and metering ports or the gas distributing generallyV-shaped cross-section; a pair of identical bottom members positionedagainst the ridged face of the body portion at oppositeY sides of theridge and which are so shaped as to form with the body portion a pair ofgas distributing chambers at opposite sides of the ridge and to formwith the opposite converging faces oi the ridge a pair of convergingslot-type jet passages forthe oxygen and fuel gas; and a pair ofidentical end plates which close the opposite ends of the distributingchambers and the jet passages.

Atorch tip embodying lthe inventionis illustrated in thel accompanyingdrawing, in which 2 Figure 1 is a transverse vertical section throughthe tip;

Fig. 2 is a bottom plan view of the discharge' face of the tip, portionsof the two bottom members-being broken away to expose the'ridged bottomface ofthe body portion;

Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 1; and

Fig. 4 shows in transverse vertical section a modified type of ridgethat may be used on the body portion.

The mainbody portion of the tip comprises an elongatedmetal block Ihaving on its bottom face a centrally located ridge 2. As best shown inFig. 2 the ridge extends longitudinally of the block, and as best shownin Fig. 1 has side faces 3 and 4 which converge from the base of theridge towards its crest 5 so that the ridge is V- shaped incross-section. The body portion I has at face portions 3 and 'l atopposite sides of the ridge.

A pair of identical 4bottom members 8v and 9, each of which may begenerally L-shaped in cross-sectionas shown in Fig. 1 and has a lengthcorresponding to the length of the body portion I as shown in Fig. 2,are positioned against the body portion at opposite sides of the ridge2. These members fit against the vflat faces 6 and 'l of the bodyportion and their longitudinal notches IIJ and II form with the bodyportion a pair of longitudinally extending gas distributing chambers I2and I3 (Fig. 1). The members 8 and 9 have inclined faces I4 and I5 whichcooperate with the sloping faces 3 and Ll on the central ridge to form apair of convergingvslot-type jet Vpassages I6 Aand Il. The two facesthat cooperate to form each jet passage maybe substantiallyparal1eldivergent, or convergent, depending upon the desired velocity ofthe issuing jets. `The preferred relation is the convergen relationshown in the drawing.

At the upper edge of the inclined face I4 of the bottom member 8 thereis a` milled serrated lip I8 which projects towards the ridge2. The

tcethofthe lip contact with the sloping-face 3` chambers and the jetpassages, and means for supplying different gases separately to thedistributing chambers for mixing by the converging jet passages.

6. A torch tip of the block type comprising an elongated blockconstituting a body portion, the bottom face of the body portion havinga central longitudinally extending ridge with converging side faces, apair of bottom members secured to the body portion at opposite sides ofsaid ridge and forming with the body portion a pair of longitudinallyextending gas distributing chambers at opposite sides of the ridge, saidbottom members having inclined faces cooperating with the sloping facesof the ridge to form a pair of slot-type jet passages, means for closingthe opposite ends of the distributing chambers and the jet passages, andmeans for supplying gas to the distributing chambers for delivery bythem to the jet passages.

7. A torch tip of the block type having two members provided withopposing faces forming a slot-type jet passage, distributing chambermeans in communication with said jet passage, a serrated lip at theupper edge oi one of said faces, the teeth of the serrated lipcontacting with the other face so that the spaces between the teethconstitute metering ports at the entrance to the gas to saiddistributing chamber means for delivery to the slot passages throughsaid metering ports.

8. A torch tip of the block type having three members, two of saidmembers each having a face disposed opposite a face on the third memberto form two slot-type jet passages, a serrated lip at the upper edge ofeach of the faces of said two members, the teeth 0f the serrated lipscontacting with the opposing faces on said third member so that thespaces between the teeth constitute metering ports at the entrance toeach of the slot-type jet passages, and means for supplying differentgases for delivery to the slot-type passages through said meteringports, said slot-type jet passages being disposed to mix said gases atsubstantially the exit of such passages.

OLIVER TI-IURMAN, JR.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 910,178 Cosmovici Jan. 19, 19091,211,792 Von Boden Jan. 9, 1917 1,514,815 Anderson Nov. 11, 1924

